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參數資料
型號: SC403MLTRT
廠商: Semtech
文件頁數: 6/32頁
文件大小: 741K
描述: IC REG DL BCK/LINEAR SYNC 32MLPQ
標準包裝: 1
系列: EcoSpeed®, SmartDrive™
拓撲: 降壓(降壓)同步(1),線性(LDO)(1)
功能: 任何功能
輸出數: 2
頻率 - 開關: 1MHz
電壓/電流 - 輸出 1: 可調至 0.75V,6A
電壓/電流 - 輸出 2: 可調至 0.75V,200mA
帶 LED 驅動器:
帶監控器:
帶序列發生器:
電源電壓: 3 V ~ 28 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 32-VFQFN 裸露焊盤
供應商設備封裝: 32-MLPQ(5x5)
包裝: 標準包裝
其它名稱: SC403MLDKR
SC403
6
Electrical Characteristics (continued)
Parameter
Conditions
Min  Typ  Max  Units
Logic Inputs/Outputs (continued)
EN/PSV Input for Disabling Switcher
 
Maximum level
0.4
V
Minimum level
0
EN/PSV Input Bias Current
EN/PSV= VDD or AGND
-8
+8    糀
ENL Input Bias Current
V
IN
 = 16V
11    18    糀
FBL, FB Input Bias Current
FBL, FB = VDD or AGND
-1
+1    糀
Linear Regulator (The LDO is shorted to the VDD pin internally.)
FBL Accuracy
LDO load = 10mA
0.735  0.75  0.765   V
LDO Current Limit
Short-circuit protection, V
IN
 = 12V, V
DD
 < 0.75V
65
mA
Start-up and foldback, V
IN
 = 12V,
0.75 < V
DD
 < 90% of final V
DD
 value
115
Operating current limit, V
IN
 = 12V, V
DD
 > 90% of final
V
DD
 value
135   200
LDO to VOUT Switch-over Threshold
(3)
-140
+140   mV
LDO to VOUT Non-switch-over Threshold
(3)
-450
+450   mV
LDO to VOUT Switch-over Resistance
V
OUT
 = +5V
2
&
LDO Drop Out Voltage
(4)
From V
IN
 to V
DD
, V
DD
 = +5V, I
LDO
 = 100mA
1.2
V
Notes:
(1) V
IN
 UVLO is programmable using a resistor divider from VIN to ENL to AGND pins. The ENL voltage is compared to an internal reference.
(2) For VDD less than 4.5V, the on-time may be limited by the VDD supply voltage and by the V
IN
. See the TON limitation and VDD supply voltage
section in the applications Information.
(3) The switch-over threshold is the maximum voltage differential between the VDD and VOUT pins which ensures that LDO will internally switch-
over to VOUT. The non-switch-over threshold is the minimum voltage differential between the LDO and VOUT pins which ensures that LDO
will not switch-over to VOUT.
(4) The LDO drop out voltage is the voltage at which the LDO output drops 2% below the no load regulation value.
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